 Seized Piston Rings, Best Method to Remove Piston |
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| SteveNMaine |
 Oct 13 2025, 12:06 PM
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#1
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Member  Group: Members Posts: 89 Joined: 12-August 24 From: Maine Member No.: 28,288 Region Association: None  |
I recently started a rebuild on a seized 1.8. I found that moisture has seized the rings and the exhaust valve on #2 cylinder. The piston is seized near the top of the exhaust stroke.
Any suggestions to free up the piston rings? I have heated the top of the piston, used penetrating oil, tapped with a mallet, etc. So far, no joy. |
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| Artfrombama |
Oct 13 2025, 01:06 PM
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#2
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Artfrombama Group: Members Posts: 379 Joined: 21-January 24 From: North Alabama Member No.: 27,870 Region Association: South East States 
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Add some penetrating oil to that cylinder, put the car in 3rd and rock the car fwd/backward.
Don't pry on the fan blades, they break easily |
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| SteveNMaine |
Oct 13 2025, 01:24 PM
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#3
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Member Group: Members Posts: 89 Joined: 12-August 24 From: Maine Member No.: 28,288 Region Association: None |
QUOTE(Artfrombama @ Oct 13 2025, 01:06 PM)  Add some penetrating oil to that cylinder, put the car in 3rd and rock the car fwd/backward. Don't pry on the fan blades, they break easily Engine is on an engine stand with that head removed. |
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| Artfrombama |
Oct 13 2025, 02:47 PM
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#4
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Artfrombama Group: Members Posts: 379 Joined: 21-January 24 From: North Alabama Member No.: 27,870 Region Association: South East States
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QUOTE(SteveNMaine @ Oct 13 2025, 02:24 PM) QUOTE(Artfrombama @ Oct 13 2025, 01:06 PM) Add some penetrating oil to that cylinder, put the car in 3rd and rock the car fwd/backward. Don't pry on the fan blades, they break easily Engine is on an engine stand with that head removed. OK... Fashion a pusher to attach to the head studs and push the piston out of the cylinder. IE., like a harmonic balancer remover |
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| SteveNMaine |
Oct 13 2025, 06:37 PM
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#5
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Member Group: Members Posts: 89 Joined: 12-August 24 From: Maine Member No.: 28,288 Region Association: None |
QUOTE(Artfrombama @ Oct 13 2025, 02:47 PM) QUOTE(SteveNMaine @ Oct 13 2025, 02:24 PM) QUOTE(Artfrombama @ Oct 13 2025, 01:06 PM) Add some penetrating oil to that cylinder, put the car in 3rd and rock the car fwd/backward. Don't pry on the fan blades, they break easily Engine is on an engine stand with that head removed. OK... Fashion a pusher to attach to the head studs and push the piston out of the cylinder. IE., like a harmonic balancer remover Thanks, I'll give that a try tomorrow. |
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| porschetub |
Oct 13 2025, 10:25 PM
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#6
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Advanced Member Group: Members Posts: 4,939 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
[quote name='SteveNMaine' date='Oct 14 2025, 12:37 PM' post='3228134']
[quote name='Artfrombama' post='3228075' date='Oct 13 2025, 02:47 PM'] [quote name='SteveNMaine' post='3228068' date='Oct 13 2025, 02:24 PM'] [quote name='Artfrombama' post='3228065' date='Oct 13 2025, 01:06 PM'] Add some penetrating oil to that cylinder, put the car in 3rd and rock the car fwd/backward. Don't pry on the fan blades, they break easily [/quote] Engine is on an engine stand with that head removed. [/quote] OK... Fashion a pusher to attach to the head studs and push the piston out of the cylinder. IE., like a harmonic balancer remover [/quote] Thanks, I'll give that a try tomorrow. [/quote Keep the engine vertical and put some diesel in there let it soak for a while ,after that apply heat around the barrel area were the rings would be,repeat over and over...try it cheers. |
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| SteveNMaine |
Oct 14 2025, 03:46 AM
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#7
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Member Group: Members Posts: 89 Joined: 12-August 24 From: Maine Member No.: 28,288 Region Association: None |
[quote name='porschetub' date='Oct 13 2025, 10:25 PM' post='3228153']
[quote name='SteveNMaine' date='Oct 14 2025, 12:37 PM' post='3228134'] [quote name='Artfrombama' post='3228075' date='Oct 13 2025, 02:47 PM'] [quote name='SteveNMaine' post='3228068' date='Oct 13 2025, 02:24 PM'] [quote name='Artfrombama' post='3228065' date='Oct 13 2025, 01:06 PM'] Add some penetrating oil to that cylinder, put the car in 3rd and rock the car fwd/backward. Don't pry on the fan blades, they break easily [/quote] Engine is on an engine stand with that head removed. [/quote] OK... Fashion a pusher to attach to the head studs and push the piston out of the cylinder. IE., like a harmonic balancer remover [/quote] Thanks, I'll give that a try tomorrow. [/quote Keep the engine vertical and put some diesel in there let it soak for a while ,after that apply heat around the barrel area were the rings would be,repeat over and over...try it cheers. [/quote] I tried the heating process like you described and am going to continue with that process. Thanks. |
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Posts in this topic
SteveNMaine Seized Piston Rings Oct 13 2025, 12:06 PM
Ishley You may have to crack the case open… unbolt all ... Oct 13 2025, 12:45 PM Aayala
I recently started a rebuild on a seized 1.8. I f... Oct 13 2025, 11:20 PM
SteveNMaine
I recently started a rebuild on a seized 1.8. I ... Oct 14 2025, 03:51 AM VaccaRabite Penetrating oil. Lots of it.
2x4 against the pist... Oct 14 2025, 05:37 AM |
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